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And the next important question: Do i take this opportunity to go 7AGE or just stay 4A? The cost of a wrecker 7A, aftermarket rods, crank sprocket, and other little bits and bobs will basically double my rebuild cost ($1k->$2k)..

Honestly i love the super duper revvy 4A, but robo's motor was an improvement in basically every single way.. And i don't think it lost any of its' "revvy-ness"

But just freshening up what's in there now would be a fair bit more simple (okay, well not really that much).